package BasicClass;

public class Test {
    public static void main(String[] args) {
        //创建大小为0的数组
//        int[] ints = new int[0];
//        System.out.println(ints[0]);

        String str = "#";
        System.out.println(str=="#");

        //负数的位数
        int a = 6254;
        int count = 0;
        while (a/10!=0){
            count++;
            a = a/10;
        }
        System.out.println(count);
    }
}
